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Geometry Vocabulary

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Section 1

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Parallel lines

Front

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Geometry Math

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Date created

Mar 1, 2020

Cards (26)

Section 1

(26 cards)

Parallel lines

Front

lines in the same plane that never intersect

Back

Midpoint

Front

A point that divides a segment into two congruent segments

Back

Perpendicular lines

Front

Intersect at a right angle

Back

Segment Addition Postulate

Front

If three points A, B, and C are collinear and B is between A and C, then AB + BC = AC

Back

Ray

Front

A part of a line, with one endpoint, that continues without end in one direction

Back

Segment

Front

A part of a line with two endpoints.

Back

Division property

Front

If a=b and c does not equal 0, a/c = b/c

Back

Congruent

Front

Having the same shape and size.

Back

Right angle

Front

Measures exactly 90 degrees

Back

Transitive property

Front

If AB=BC, BC=CD, then AB=CD (property)

Back

Subtraction property

Front

If a=b, then a-c=b-c

Back

Segment bisector

Front

A point, line, ray, or segment that divides a segment into two congruent segments

Back

Bisect

Front

to divide into two equal parts

Back

Line

Front

A straight, unbroken set of points that goes on forever. It has infinite length, but no thickness.

Back

Collinear points

Front

A set of points that lie on the same line

Back

Angle bisector

Front

A ray that divides am angle into two congruent angles

Back

Symmetric property

Front

AB=BA (property)

Back

Obtuse angle

Front

Measures more than 90 degrees and less than 180 degrees

Back

Reflexive property

Front

AB=AB (property)

Back

Coplanar

Front

Points, lines, or segments that lie on the same plane

Back

Distributive property

Front

3(x+2)=3x+6

Back

Perpendicular bisector

Front

A segment, ray, line, or plane that is perpendicular to a segment at its midpoint

Back

Acute angle

Front

Measures less than 90 degrees

Back

Straight angle

Front

Measures 180 degrees

Back

Congruent figures

Front

Figures that have the same size and shape

Back

Addition property

Front

If a=b, then a+c=b+c

Back